H2 Roman Republican Anonymous struck bronzes McCabe group H2, RRC56 Dupondius RRC 56/1, half weight overstrikes on 40g Asses.
These Minerva/Prow dupondius types are overstrikes on 40 gram Asses. The undertype weights correspond to Rome group G. Also discussed are two specimens of RRC 69/1 with stylistic details identical to RRC 69/2 As, proving a second Punic war dating for both types.
The Anonymous Struck Bronze Coinage of the Roman Republic:
a Provisional Arrangement, Andrew McCabe, 2013, text and images copyright Ahala, Andrew McCabe
Group H2 Illustrated coins, and selected other museum or published examples:
Dupondius: 47.69g (BM.56.1.1 ex Ostia hoard 1908); 46.33g (RBW-NAC61 lot 214 ex Platt Hall 1950); 45.50g (Gnecchi ); 43.00 (Museo Nazionale di Roma ex Ostia hoard), 41.08g (Paris.1985-4, fig.H2.Dp.1*); 39.50g (Hamburger 1896); 39.37g (BM.69.1.1, as RRC 69/1, ex Spink 1909, fig.RRC69.1.2*); 39.20g (Paris.A1070, incorrectly classified as RRC 56/1 but should be RRC 69/1, fig.RRC69.1.1*); 38.55g (Spink 1913 ex Ostia hoard 1908); 38.25g (RR ex Garrett 1927); 37.95g (uncertain example); 37.87g (Paris.AF.RR1143 , fig.H2.Dp.2*); 37.10g (Ratto ex Ostia hoard 1908); 35.62g (Hannover.507 ex Mayer). Another example, in the P.Bonazzi collection example, is cited by Crawford as coming from the Ostia 1908 hoard.